651402898737863 has 4 divisors (see below), whose sum is σ = 662081634782808. Its totient is φ = 640724162692920.

The previous prime is 651402898737853. The next prime is 651402898737881. The reversal of 651402898737863 is 368737898204156.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 651402898737863 - 2⁴ = 651402898737847 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (651402898737853) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5339368022381 + ... + 5339368022502.

It is an arithmetic number, because the mean of its divisors is an integer number (165520408695702).

It is a 2-persistent number, because it is pandigital, and so is 2⋅651402898737863 = 1302805797475726, but 3⋅651402898737863 = 1954208696213589 is not.

Almost surely, 2^{651402898737863} is an apocalyptic number.

651402898737863 is a deficient number, since it is larger than the sum of its proper divisors (10678736044945).

651402898737863 is a wasteful number, since it uses less digits than its factorization.

651402898737863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10678736044944.

The product of its (nonzero) digits is 2926264320, while the sum is 77.

The spelling of 651402898737863 in words is "six hundred fifty-one trillion, four hundred two billion, eight hundred ninety-eight million, seven hundred thirty-seven thousand, eight hundred sixty-three".